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    On-vehicle navigation apparatus
    1.
    发明授权
    On-vehicle navigation apparatus 失效
    车载导航仪

    公开(公告)号：US5363306A

    公开(公告)日：1994-11-08

    申请号：US840811

    申请日：1992-02-25

    申请人： Shingo Kuwahara ,  Morio Araki

    发明人： Shingo Kuwahara ,  Morio Araki

    IPC分类号： G01C21/00 ,  G01C21/34 ,  G08G1/0969 ,  G06F15/50

    CPC分类号： G01C21/3667 ,  G01C21/3691

    摘要： An on-vehicle navigation apparatus displays travel locus marks that permits a user to grasp the driving condition of a vehicle having this apparatus installed therein, while securing good visibility of the background map. The on-vehicle navigation apparatus has a storage means for storing a plurality of pieces of travel locus data in response to a predetermined collecting timing, and another storage means for storing an elapsed time from one predetermined collecting timing to the next predetermined collecting timing. The apparatus reads out the travel locus data and elapsed time .DELTA.ti respectively from those storage means, designates different travel locus marks in accordance with the read-out elapsed time .DELTA.ti, and shows the travel locus marks on a display screen on the basis of read-out travel locus data. A traffic jam index Ji and a specific value may be used in place of the elapsed time .DELTA.ti.

    摘要翻译： 车载导航装置显示允许用户掌握安装有该装置的车辆的驾驶状况的行驶轨迹标记，同时确保背景图的良好可视性。 车载导航装置具有：存储装置，用于响应于预定的收集定时存储多条行驶轨迹数据;以及存储装置，用于存储从一个预定收集定时到下一个预定收集定时的经过时间。 该装置分别从这些存储装置读出行驶轨迹数据和经过时间DELTA ti，根据读出的经过时间DELTA ti指定不同的行驶轨迹标记，并且基于显示屏幕上的行进轨迹标记 读出旅行轨迹数据。 可以使用交通堵塞指数Ji和特定值代替经过时间DELTA ti。

    On-vehicle navigation apparatus
    2.
    发明授权
    On-vehicle navigation apparatus 失效
    车载导航仪

    公开(公告)号：US5262774A

    公开(公告)日：1993-11-16

    申请号：US32209

    申请日：1993-03-15

    申请人： Shingo Kuwahara ,  Morio Araki

    发明人： Shingo Kuwahara ,  Morio Araki

    IPC分类号： G01C21/26 ,  G08G1/123 ,  G01C21/00

    CPC分类号： G01C21/26

    摘要： An on-vehicle navigation apparatus has enhanced efficiency of the use of a memory for storing the locus data, without losing the details and accuracy of a locus pattern drawn on the basis of collected locus data. The on-vehicle navigation apparatus acquires vehicle location information C and time information T, and stores the vehicle location information C as locus data Si and the associated time information T as collecting time data Ti in response to a collection command. The apparatus then computes a travel distance D from the previous locus data collecting position on the basis of the vehicle location information C and the locus data Si, computes elapsed time .DELTA.T from the previous locus data collecting time on the basis of the time information T and the collecting time data Ti, and generates the collection command when the elapsed time .DELTA.T reaches a predetermined time after a predetermined travel distance D is reached.

    摘要翻译： 车载导航装置提高了使用存储轨迹数据的存储器的效率，而不会丢失基于收集的轨迹数据绘制的轨迹图案的细节和精度。 车载导航装置获取车辆位置信息C和时间信息T，并且响应于收集命令将车辆位置信息C作为轨迹数据Si和相关联的时间信息T存储为收集时间数据Ti。 然后，该装置基于车辆位置信息C和轨迹数据Si计算来自先前轨迹数据收集位置的行驶距离D，基于时间信息T从前一轨迹数据收集时间计算经过时间DELTA T 和收集时间数据Ti，并且当经过时间DELTA T到达预定行驶距离D之后的预定时间时，生成收集命令。

    Method of and apparatus for calculating position of movable body in navigation system, method of and apparatus for correcting the position, and program storage device readable by the apparatus
    5.
    发明授权
    Method of and apparatus for calculating position of movable body in navigation system, method of and apparatus for correcting the position, and program storage device readable by the apparatus 失效
    用于计算导航系统中移动体位置的方法和装置，用于校正位置的方法和装置，以及由该装置可读的程序存储装置

    公开(公告)号：US5949375A

    公开(公告)日：1999-09-07

    申请号：US841102

    申请日：1997-04-30

    申请人： Motoki Ishiguro ,  Shingo Kuwahara

    发明人： Motoki Ishiguro ,  Shingo Kuwahara

    IPC分类号： G09B29/00 ,  G01C21/00 ,  G01C22/00 ,  G01S1/00 ,  G01S5/02 ,  G01S5/14 ,  G01S19/13 ,  G01S19/14 ,  G01S19/49 ,  G01S19/50 ,  G08G1/0969 ,  G09B29/10 ,  G01S3/02

    CPC分类号： G01S19/40 ,  G01S19/49 ,  G01S19/13

    摘要： A method of calculating a present position of a movable body for use in a navigation system, is provided with the processes of: measuring an electric-wave-based measurement position which is a position of the movable body measured on the basis of electric waves for positional measurement, which are transmitted from satellites accompanied by time data indicating an electric-wave-based measurement time which is a time when measuring the electric-wave-based measurement position, at the electric-wave-based measurement time; measuring a self-sustained measurement position which is a position of the movable body measured on the basis of data from self-sustained type sensors built in the movable body; calculating a time difference between the electric-wave-based measurement time and a time when measuring the self-sustained measurement position; correcting the electric-wave-based measurement position on the basis of the calculated time difference; and calculating the present position of the movable body on the basis of the corrected electric-wave-based measurement position and the self-sustained measurement position.

    摘要翻译： 提供一种计算用于导航系统中的可移动体的当前位置的方法，该方法包括：测量基于电波测量的基于电波的基于电波的测量位置的电波测量位置 在基于电波的测量时刻，从卫星发送的位置测量，伴随着表示基于电波测量位置的时间的基于电波的测量时间的时间数据; 测量作为基于内置于所述移动体内的自持型传感器的数据而测定的所述可移动体的位置的自持测量位置; 计算电波测量时间与测量自持测量位置之间的时间差; 基于计算出的时间差校正基于电波的测量位置; 并且基于经校正的电波测量位置和自持续测量位置来计算可移动体的当前位置。

    Navigation system and a method of calculating GPS measuring deviation
    6.
    发明授权
    Navigation system and a method of calculating GPS measuring deviation 失效
    导航系统和计算GPS测量偏差的方法

    公开(公告)号：US5483456A

    公开(公告)日：1996-01-09

    申请号：US144535

    申请日：1993-11-02

    申请人： Shingo Kuwahara ,  Satoshi Odagawa

    发明人： Shingo Kuwahara ,  Satoshi Odagawa

    IPC分类号： G01C21/00 ,  G01C21/30 ,  G01S19/24 ,  G01S19/49 ,  G01S19/50 ,  G08G1/0969 ,  G06F165/00

    CPC分类号： G01S19/42 ,  G01C21/30

    摘要： A navigation system includes: GPS receiving device for receiving satellite information including accuracy information supplied from a plurality of GPS satellites and outputting at least the accuracy information, a measuring position as a receiving point calculated from the satellite information, and a declining rate of measuring accuracy calculated on the basis of the position of the GPS satellites; deviation calculating device for calculating a GPS measuring deviation by using the accuracy information and the declining rate of the measuring accuracy; map information storing device for storing map information including digitalized road information; and current position estimating device for estimating a current position by searching the road information within the radius of the GPS measuring deviation around the measured position.

    摘要翻译： 导航系统包括：GPS接收装置，用于接收包括从多个GPS卫星提供的精度信息的卫星信息，并至少输出精度信息，作为从卫星信息计算的接收点的测量位置和测量精度的下降率 根据GPS卫星的位置计算; 偏差计算装置，用于通过使用精度信息和测量精度的下降率来计算GPS测量偏差; 地图信息存储装置，用于存储包括数字化道路信息的地图信息; 以及当前位置估计装置，用于通过在测量位置周围的GPS测量偏差的半径内搜索道路信息来估计当前位置。

    Navigation apparatus
    8.
    发明授权
    Navigation apparatus 失效
    导航仪

    公开(公告)号：US5442559A

    公开(公告)日：1995-08-15

    申请号：US132826

    申请日：1993-10-07

    申请人： Shingo Kuwahara ,  Satoshi Odagawa

    发明人： Shingo Kuwahara ,  Satoshi Odagawa

    IPC分类号： G01C21/00 ,  G01C21/30 ,  G06F17/30 ,  G08G1/0969 ,  G09B29/10 ,  G06F165/00

    CPC分类号： G01C21/30

    摘要： A navigation apparatus is provided with: a measurement unit for measuring a self-position and outputting self-position data; a memory unit for storing map data which includes crossing data and road data; a map-matching unit, for map-matching the self-position data with respect to the road data; and a displaying unit for displaying the map-matched self-position data and the road data on the map data. The map-matching unit is provided with a first crossing searching unit for searching crossing data corresponding to a first crossing connected to a road, to which the self-position data is presently map-matched, and located within a first predetermined distance from the self-position. The first crossing searching unit outputs first candidacy crossing data. The map-matching unit is also provided with a second crossing searching unit for searching crossing data corresponding to a second crossing located within a second predetermined distance from the first crossing. The second crossing searching unit outputs second candidacy crossing data. The map-matching unit is further provided with a map-matching control unit for map-matching the self-position data with respect to the road data corresponding to roads connected to the first and second crossings indicated by the first and second candidacy crossing data.

    摘要翻译： 导航装置具有：测量单元，用于测量自身位置并输出自身位置数据; 用于存储包括交叉数据和道路数据的地图数据的存储单元; 地图匹配单元，用于将相对于道路数据的自身位置数据进行地图匹配; 以及显示单元，用于在地图数据上显示地图匹配的自位置数据和道路数据。 地图匹配单元设置有第一交叉搜索单元，用于搜索与连接到道路的第一交叉相对应的交叉数据，自动位置数据当前匹配于该道路，并位于距离自身的第一预定距离内 -位置。 第一交叉搜索单元输出第一轮候交叉数据。 地图匹配单元还设置有第二交叉搜索单元，用于搜索与位于距离第一交叉点的第二预定距离内的第二交叉相对应的交叉数据。 第二交叉搜索单元输出第二候选交叉数据。 地图匹配单元还设置有地图匹配控制单元，用于对应于与由第一和第二候选人交叉数据指示的第一和第二交叉连接的道路相对应的道路数据进行地图匹配的自定位数据。